# K3 Tones vs FFT Spectrogram Music Player

The clearest difference is in-app purchases: K3 Tones at none against FFT Spectrogram Music Player's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. FFT Spectrogram Music Player sells 1 one-off in-app purchase. K3 Tones asks for nothing beyond the download.

## The numbers

| Metric | K3 Tones | FFT Spectrogram Music Player |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 6 days |
| Size | 10 MB | 134 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [kadosh3, llc](https://appshunter.io/developer/1447650365) | [Proiectus GmbH](https://appshunter.io/developer/1885129725) |

## What reviewers say

### K3 Tones

[App page](https://appshunter.io/ios/app/k3-tones/id1668442616)

**In-app purchases:** none


### FFT Spectrogram Music Player

[App page](https://appshunter.io/ios/app/fft-spectrogram-music-player/id6763494800)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | one-time |


## Frequently asked questions

### Is K3 Tones free?

K3 Tones is free to download, with no in-app purchases.

### Is FFT Spectrogram Music Player free?

FFT Spectrogram Music Player is free to download, with in-app purchases available.

### Do K3 Tones or FFT Spectrogram Music Player have ads?

Neither K3 Tones nor FFT Spectrogram Music Player shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*